Subscribers can change other list membership options, including their:
 Mail address  Name on the list
 Posting acknowledgments  Message copy handling
These options are available on your subscription options page.
To access additional options:
1 In a web browser, enter the URL of the list information page.
This is usually:
server.domain.tld/mailman/listinfo/listname
2 In the Subscriber section of the web page, enter your mail address, and click Unsubscribe Or Edit Options.
3 Find the option you want to change and follow the instructions on screen.
Where to Find More Information
Mailman’s features and its capabilities, can be found at:
www.list.org
You will also find the following information at www.list.org/docs.html:
 Web-based administration and subscriber commands  Mail-based administration and subscriber commands  Frequently Asked Questions (FAQ) lists
Glossary
Glossary
This glossary defines terms and spells out abbreviations you may encounter while working with online help or other Mac OS X Server Documentation. References to terms defined elsewhere in the glossary appear in italics.
access control A method of controlling which computers can access a network or network services.
access control list See ACL.
access privileges See permissions.
ACL A list maintained by a system that defines the rights of users and groups to access resources on the system.
address A number or other identifier that uniquely identifies a computer on a network, a block of data stored on a disk, or a location in a computer memory. See also IP address, MAC address.
alias Another email address at your domain that redirects incoming email to an existing user.
alphanumeric Containing characters that include letters, numbers, and punctuation characters (such as _ and ?).
APOP authentication An extension to the POP3 mail protocol. It ensures that the username and password are encrypted before being used to authenticate to a mail server.
authentication The process of proving a user’s identity, typically by validating a user name and password. Usually authentication occurs before an authorization process determines the user’s level of access to a resource. For example, file service authorizes full access to folders and files that an authenticated user owns.
back up (verb) The act of creating a backup.
bit A single piece of information, with a value of either 0 or 1.
byte A basic unit of measure for data, equal to eight bits (or binary digits).
canonical name The “real” name of a server when you’ve given it a “nickname” or alias.
For example, mail.apple.com might have a canonical name of MailSrv473.apple.com.
certificate Sometimes called an “identity certificate” or “public key certificate.” A file in a specific format (Mac OS X Server uses the x.509 format) that contains the public key half of a public-private keypair, the user’s identity information such as name and contact information, and the digital signature or either a Certificate Authority (CA) or the key user.
Certificate Authority An authority that issues and manages digital certificates in order to ensure secure transmission of data on a public network. See also public key
infrastructure and certificate.
certification authority See Certificate Authority.
character A synonym for byte.
cleartext Data that hasn’t been encrypted.
client A computer (or a user of the computer) that requests data or services from another computer, or server.
command line The text you type at a shell prompt when using a command-line interface.
command-line interface A way of interfacing with the computer (for example, to run programs or modify file system permissions) by entering text commands at a shell prompt.
computer name The default name used for SLP and SMB/CIFS service registrations.
The Network Browser in the Finder uses SLP to find computers advertising Personal File Sharing and Windows File Sharing. It can be set to bridge subnets depending on the network router settings. When you turn on Personal File Sharing, users see the computer name in the Connect To Server dialog in the Finder. Initially it is “<first created user>’s Computer” (for example, “John’s Computer”) but can be changed to anything. The computer name is used for browsing for network file servers, print queues, Bluetooth discovery, Apple Remote Desktop clients, and any other network resource that identifies computers by computer name rather than network address.
The computer name is also the basis for the default local hostname.
cracker A malicious user who tries to gain unauthorized access to a computer system in order to disrupt computers and networks or steal information. Compare to hacker.
decryption The process of retrieving encrypted data using some sort of special knowledge. See also encryption.
digital signature An electronic signature that can be used to verify the identity of the sender of a message.
directory Also known as a folder. A hierarchically organized list of files and/or other directories.
directory services Services that provide system software and applications with uniform access to directory domains and other sources of information about users and resources.
DNS Domain Name System. A distributed database that maps IP addresses to domain names. A DNS server, also known as a name server, keeps a list of names and the IP addresses associated with each name.
DNS domain A unique name of a computer used in the Domain Name System to translate IP addresses and names. Also called a domain name.
DNS name A unique name of a computer used in the Domain Name System to translate IP addresses and names. Also called a domain name.
domain Part of the domain name of a computer on the Internet. It does not include the Top Level Domain designator (for example, .com, .net, .us, .uk). Domain name
“www.example.com” consists of the subdomain or host name “www,” the domain
“example,” and the top level domain “com.”
domain name See DNS name.
Domain Name System See DNS.
encryption The process of obscuring data, making it unreadable without special knowledge. Usually done for secrecy and confidential communications. See also decryption.
Ethernet A common local area networking technology in which data is transmitted in units called packets using protocols such as TCP/IP.
Ethernet ID See MAC address.
firewall Software that protects the network applications running on your server.
IP firewall service, which is part of Mac OS X Server software, scans incoming IP packets and rejects or accepts these packets based on a set of filters you create.
full name See long name.
gigabyte See GB.
hacker An individual who enjoys programming, and explores ways to program new features and expand the capabilities of a computer system. See also cracker.
host Another name for a server.
host name A unique name for a server, historically referred to as the UNIX hostname.
The Mac OS X Server host name is used primarily for client access to NFS home directories. A server determines its host name by using the first name available from the following sources: the name specified in the /etc/hostconfig file
(HOSTNAME=some-host-name); the name provided by the DHCP or BootP server for the primary IP address; the first name returned by a reverse DNS (address-to-name) query for the primary IP address; the multicast DNS local hostname; the name
“localhost.”
identity certificate See certificate.
IMAP Internet Message Access Protocol. A client-server mail protocol that allows users to store their mail on the mail server rather than download it to the local computer.
Mail remains on the server until the user deletes it.
Internet Generally speaking, a set of interconnected computer networks communicating through a common protocol (TCP/IP). The Internet (note the capitalization) is the most extensive publicly accessible system of interconnected computer networks in the world.
Internet Message Access Protocol See IMAP.
Internet Protocol See IP.
Internet service provicer See ISP.
IP Internet Protocol. Also known as IPv4. A method used with Transmission Control Protocol (TCP) to send data between computers over a local network or the Internet.
IP delivers packets of data, while TCP keeps track of data packets.
IP address A unique numeric address that identifies a computer on the Internet.
IP subnet A portion of an IP network, which may be a physically independent network segment, that shares a network address with other portions of the network and is identified by a subnet number.
IPv4 See IP.
IPv6 Internet Protocol version 6. The next-generation communication protocol to replace IP (also known as IPv4). IPv6 allows a greater number of network addresses and can reduce routing loads across the Internet.
ISP Internet service provider. A business that sells Internet access and often provides web hosting for ecommerce applications as well as mail services.
KB Kilobyte. 1,024 (210) bytes.
Kerberos A secure network authentication system. Kerberos uses tickets, which are issued for a specific user, service, and period of time. Once a user is authenticated, it’s possible to access additional services without retyping a password (this is called single sign-on) for services that have been configured to take Kerberos tickets. Mac OS X Server uses Kerberos v5.
kilobyte See KB.
LDA Local delivery agent. A mail service agent that transfers mail messages from incoming mail storage to the email recipient’s inbox. The LDA is responsible for handling local delivery of messages and for making mail accessible to the user’s email application.
LDAP Lightweight Directory Access Protocol. A standard client-server protocol for accessing a directory domain.
Lightweight Directory Access Protocol See LDAP.
list administrator A mailing list administrator. List administrators can add or remove subscribers from a mailing list and designate other list administrators. List
administrators aren’t necessarily local machine or domain administrators.
local domain A directory domain that can be accessed only by the computer on which it resides.
local hostname A name that designates a computer on a local subnet. It can be used without a global DNS system to resolve names to IP addresses. It consists of lower case letters, numbers, or hyphens (except as the last characters), and ends with “.local” (e.g, bills-computer.local). Although the name is derived by default from the computer name, a user can specify this name in the Network pane of System Preferences. It can be changed easily, and can be used anywhere a DNS name or fully qualified domain name is used. It can only resolve on the same subnet as the computer using it.
long name The long form of a user or group name. See also user name.
MAA Mail access agent. A mail service that communicates with a user’s email program to download mail message headers to the user’s local computer.
MAC address Media access control address. A hardware address that uniquely identifies each node on a network. For AirPort devices, the MAC address is called the AirPort ID.
Mac OS X The latest version of the Apple operating system. Mac OS X combines the reliability of UNIX with the ease of use of Macintosh.
Mac OS X Server An industrial-strength server platform that supports Mac, Windows, UNIX, and Linux clients out of the box and provides a suite of scalable workgroup and network services plus advanced remote management tools.
mail access agent See MAA.
mail exchange record See MX record.
mail host The computer that provides your mail service.
mail transfer agent See MTA.
mail user agent See MUA.
mailing list A mail service used to distribute a single email message to multiple recipients. Mailing list subscribers do not have to be mail users on your mail server.
Mailing lists can be administered by someone other than a workgroup or server administrator. Mailing list subscribers can often add or remove themselves from lists.
MB Megabyte. 1,048,576 (220) bytes.
megabyte See MB.
MTA Mail Transfer Agent. A mail service that sends outgoing mail, receives incoming mail for local recipients, and forwards incoming mail of nonlocal recipients to other MTAs.
MUA Mail user agent. A mail process on a user’s local computer that works with the MAA to download mail messages and headers to the user’s local computer. This is most commonly referred to as an email application, or email program.
MX record Mail exchange record. An entry in a DNS table that specifies which
computer manages mail for an Internet domain. When a mail server has mail to deliver to an Internet domain, the mail server requests the MX record for the domain. The server sends the mail to the computer specified in the MX record.
name server A server on a network that keeps a list of names and the IP addresses associated with each name. See also DNS.
node A processing location. A node can be a computer or some other device, such as a printer. Each node has a unique network address. In Xsan, a node is any computer connected to a storage area network.
open relay A server that receives and automatically forwards mail to another server.
Junk mail senders exploit open relay servers to avoid having their own mail servers blacklisted as sources of junk mail.
Open Relay Behavior-modification System See ORBS.
open source A term for the cooperative development of software by the Internet community. The basic principle is to involve as many people as possible in writing and debugging code by publishing the source code and encouraging the formation of a large community of developers who will submit modifications and enhancements.
ORBS Open Relay Behavior-modification System. An Internet service that blacklists mail servers known to be or suspected of being open relays for senders of junk mail.
ORBS servers are also known as “black-hole” servers.
permissions Settings that define the kind of access users have to shared items in a file system. You can assign four types of permissions to a share point, folder, or file: read/
write, read-only, write-only, and none (no access). See also privileges.
plaintext Text that hasn’t been encrypted.
POP Post Office Protocol. A protocol for retrieving incoming mail. After a user retrieves POP mail, it’s stored on the user’s computer and is usually deleted automatically from the mail server.
port A sort of virtual mail slot. A server uses port numbers to determine which application should receive data packets. Firewalls use port numbers to determine whether or not data packets are allowed to traverse a local network. “Port” usually refers to either a TCP or UDP port.
Post Office Protocol See POP.
private key One of two asymmetric keys used in a PKI security system. The private key is not distributed and usually encrypted with a passphrase by the owner. It can digitally sign a message or certificate, claiming authenticity. It can decrypt messages encrypted with the corresponding public key. Finally, it can encrypt messages that can only be decrypted by the private key.
privileges The right to access restricted areas of a system or perform certain tasks (such as management tasks) in the system.
public key One of two asymmetric keys used in a PKI security system. The public key is distributed to other communicating parties. It can encrypt messages that can be decrypted only by the holder of the corresponding private key, and it can verify the signature on a message originating from a corresponding private key.
public key cryptography A method of encrypting data that uses a pair of keys, one public and the other private, that are obtained from a certification authority. One key is used to encrypt messages, and the other key to decrypt them.
public key infrastructure A secure method of exchanging data over an unsecure public network, such as the Internet, by using public key cryptography.
queue An orderly waiting area where items wait for some type of attention from the system.
RBL Real-time black-hole list. An Internet service that blacklists mail servers known to be or suspected of being open relays for senders of junk mail.
real-time black-hole list See RBL.
record type A specific category of records, such as users, computers, and mounts.
For each record type, a directory domain may contain any number of records.
relay In QuickTime Streaming Server, a relay receives an incoming stream and then forwards that stream to one or more streaming servers. Relays can reduce Internet bandwidth consumption and are useful for broadcasts with numerous viewers in different locations. In Internet mail terms, a relay is a mail SMTP server that sends incoming mail to another SMTP server, but not to its final destination.
relay point See open relay.
round robin An Xsan storage pool allocation strategy. In a volume consisting of more than one storage pool, Xsan allocates space for successive writes to each available pool in turn.
Secure Sockets Layer See SSL.
short name An abbreviated name for a user. The short name is used by Mac OS X for home directories, authentication, and email addresses.
Simple Mail Transfer Protocol See SMTP.
SMTP Simple Mail Transfer Protocol. A protocol used to send and transfer mail. Its ability to queue incoming messages is limited, so SMTP usually is used only to send mail, and POP or IMAP is used to receive mail.
spam Unsolicited email; junk mail.
SSL Secure Sockets Layer. An Internet protocol that allows you to send encrypted, authenticated information across the Internet. More recent versions of SSL are known as TLS (Transport Level Security).
static IP address An IP address that’s assigned to a computer or device once and is never changed.
subdomain Sometimes called the host name. Part of the domain name of a computer on the Internet. It does not include the domain or the top-level domain (TLD)
designator (for example, .com, .net, .us, .uk). The domain name “www.example.com”
consists of the subdomain “www,” the domain “example,” and the top level domain
“com.”
TB Terabyte. 1,099,511,627,776 (240) bytes.
TCP Transmission Control Protocol. A method used along with the Internet Protocol (IP) to send data in the form of message units between computers over the Internet.
IP takes care of handling the actual delivery of the data, and TCP takes care of keeping track of the individual units of data (called packets) into which a message is divided for efficient routing through the Internet.
terabyte See TB.
UCE Unsolicited commercial email. See spam.
UDP User Datagram Protocol. A communications method that uses the Internet Protocol (IP) to send a data unit (called a datagram) from one computer to another in a network. Network applications that have very small data units to exchange may use UDP rather than TCP.
user name The long name for a user, sometimes referred to as the user’s “real” name.
See also short name.
virtual domain Another domain that can be used in email addresses for your mail users. Also, a list of all the domain names for which your mail server is responsible.
virtual user An alternate email address (short name) for a user. Similar to an alias, but it involves creating another user account.
WAN Wide area network. A network maintained across geographically separated facilities, as opposed to a LAN (local area network) within a facility. Your WAN interface is usually the one connected to the Internet.
wide area network See WAN.
wildcard A range of possible values for any segment of an IP address.
Index
connection control 43, 45, 46 frequency of user 65 See also IMAP
ACLs (access control lists) 33 addresses. See email addresses anonymous user access 29, 44 APOP (authenticated POP) 26 archiving 63, 66, 82 authenticated POP. See APOP
Bcc (blind carbon copies), mail messages 63 blacklisted servers 43, 45
bounced message options 77
C
Certificate Authority (CA) 20 certificates 20, 27
Certificate Signing Request. See CSR ClamAV 47, 50
and Postfix email aliases 36 sudo 54
configuration clients 34
incoming mail 24, 25, 26, 27, 29 outgoing mail 29, 31, 32 overview 13, 21, 24 WebMail 17
See also Mailman setup CRAM-MD5 authentication 27, 30 cyradm tool 51
Cyrus mail service 14, 16, 51, 67
D
database, mail 57, 58, 59, 60 disks
full disk errors 67
full disk errors 67